//题目：宏#define命令练习(1)
//1.程序分析：
//2.程序源代码：
#include "stdio.h"
#define TRUE 1
#define FALSE 0
#define SQ(x) (x)*(x)
int main() {
	int num;
	int again = 1;
	printf("\40: Program will stop if input value less than 50.\n");
	while (again) {
		printf("\40:Please input number==>");
		scanf("%d", &num);
		printf("\40:The square for this number is %d \n", SQ(num));
		if (num >= 50)
			again = TRUE;
		else
			again = FALSE;
	}
}
